ISRO Scientist or Engineer Electronics 2016

Purity

Strain Hardening

Elastic modules

None of the above

High Conductivity & Low temperature coefficient

High Conductivity & High temperature coefficient

Low Conductivity & zero temperature coefficient

Low Conductivity & High temperature coefficient

high refractive index core & low refractive index cladding

Low refractive index core & high refractive index cladding

Uniform refractive index core surroundedby variable refractive index cladding

None of the above

Inorganic substances

Brittle

Good Thermal insulators

All of the above

It is a material showing perfect conductivity and Meissner effect below a critical temperature

It is conductor having zero resistance

It is a perfect conductor with highest diamagnetic susceptibility

It is a perfect conductor but becomes resistive when the current density through it exceeds a critical value

an even function

an odd function

neither odd nor even

both odd and even

Uniform

A pair of impulses

Gaussian

Rayleigh

$$C_x(\tau) \geq 0 for all \tau$$

$$\int_{-\infty}^{\infty}C_x(\tau) d\tau \geq 0 $$

$$\int_{-\infty}^{\infty}C_x(\tau) exp(-j \omega \tau) d \tau \geq 0 $$

$$C_x(0) \geq 0 $$

PPM (Pulse Position Modulation)

PAM (Pulse Amplitude Modulation)

PCM (Pulse Code Modulation)

PDM (Pulse Duration Modulation)